{"id":82427,"date":"2024-10-18T03:05:08","date_gmt":"2024-10-18T03:05:08","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-449-1990\/"},"modified":"2024-10-24T19:50:08","modified_gmt":"2024-10-24T19:50:08","slug":"ieee-449-1990","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-449-1990\/","title":{"rendered":"IEEE 449 1990"},"content":{"rendered":"

Revision Standard – Inactive – Withdrawn. Requirements are provided for ferroresonant voltage regulators that operate at relatively constant frequencies and provide substantially constant output voltages in spite of relatively large changes of input voltage. Requirements for controlled ferroresonant regulators that maintain substantially constant output voltages regardless of variations, within limits, of input voltage, temperature, frequency, and output load are also included. The requirements cover definitions, symbols, and circuit schematics; service conditions; ratings; nameplate and other markings; testing; application; and maintenance. Provision is made for relating the characteristics of ferroresonant regulators to associated rectifiers and circuits.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
7<\/td>\nScope
References
Definitions Symbols and Circuit Schematics
3.1 Electrical Terms
3.2 Symbols <\/td>\n<\/tr>\n
8<\/td>\n3.3 Definitions
Basic Series Ferroresonant Voltage Regulator
Basic Series Parallel Ferroresonant Voltage Regulator <\/td>\n<\/tr>\n
9<\/td>\nA Common Form of the Ferroresonant Transformer Voltage Regulator
Schematic of Fig <\/td>\n<\/tr>\n
10<\/td>\nControlled Ferroresonant Regulator Schematic
Output Versus Input Voltage with Jump Resonance <\/td>\n<\/tr>\n
11<\/td>\nReversal Point with Jump Resonance
Output Versus Input Voltage without Jump Resonance
Reversal Point without Jump Resonance <\/td>\n<\/tr>\n
12<\/td>\nOverload Characteristic with Unsaturated Series Inductance
Overload Characteristic with Saturated Series Inductance <\/td>\n<\/tr>\n
13<\/td>\nAuxiliary Circuits to Provide Special Features
Magnetically Coupled Tuned-Cancellation-Type Harmonic Filter
Electrically Connected Tuned-Cancellation-Type Harmonic Filter <\/td>\n<\/tr>\n
14<\/td>\nTuned-Type Harmonic Filter
Compensating Winding
Ferroresonant Transformer Circuit with Compensating Winding <\/td>\n<\/tr>\n
15<\/td>\nFerroresonan t Transformer Circuit with Frequency Compensating Network
Power Factor Compensation Using Series Capacitance
Power Factor Compensation Using Transformer-Coupled Capacitance <\/td>\n<\/tr>\n
16<\/td>\nService Conditions
4.1 Environmental
4.2 Mechanical
Ratings
5.1 Input Rating <\/td>\n<\/tr>\n
17<\/td>\n5.2 Output Rating
Resonant Section Rating <\/td>\n<\/tr>\n
18<\/td>\n5.4 Thermal Rating
5.5 Electric Strength
5.6 Magnetic Radiation
5.7 Acoustic Noise
5.8 Corona <\/td>\n<\/tr>\n
19<\/td>\nNameplate and Other Markings
6.1 Nameplate
6.2 Nameplate Information
6.3 Termination Markings
Test Procedure
Electric Strength Tests <\/td>\n<\/tr>\n
20<\/td>\nInput Characteristics (Resonating Capacitor Connected) <\/td>\n<\/tr>\n
21<\/td>\n7.3 Output Characteristics
7.4 Overload Characteristics
Transient Excursions (Overshoot and Undershoot)
7.6 Temperature Rise <\/td>\n<\/tr>\n
22<\/td>\n7.7 External Flux Field
Audible Sound-Level Tests
Sound-Level Corrections for Noise Tests <\/td>\n<\/tr>\n
23<\/td>\n7.9 Polarity
Application Guide
8.1 Introduction
Additive Polarity (If x1 and X2 Are Reversed the Polarity Is Subtractive) <\/td>\n<\/tr>\n
24<\/td>\nShunt-Type Ferroresonant Regulators <\/td>\n<\/tr>\n
25<\/td>\n8.3 Specific Applications <\/td>\n<\/tr>\n
26<\/td>\nIsolated Single-phase Loads
Separate Single-phase Loads Connected in a Four-Wire Wye <\/td>\n<\/tr>\n
27<\/td>\nFerroresonant Regulator with Multiple Inputs <\/td>\n<\/tr>\n
28<\/td>\nMaintenance Guide
Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Standard for Ferroresonant Voltage Regulators<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n1990<\/td>\n29<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":82428,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-82427","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ieee","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/82427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/82428"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=82427"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=82427"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=82427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}